we do not need the Spirit to live a moral life, but we do need the Spirit to live a supernatural life. In other words, we don’t need the Spirit to be different on the outside; we do need the Spirit to be different on the inside. Yet again: we don’t need the Spirit to obey God; we do need the Spirit to enjoy obeying God. And that’s the only kind of real obedience anyway, since enjoying God is itself one of God’s commands (Deut. 28:47; Ps. 37:4; Phil. 4:4).
